added versions + version checks to all templates

notify_templates/notify_generic.sh

@@ -1,4 +1,5 @@
 ### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
+NOTIFY_GENERIC_VERSION="v0.1"
 #
 # Copy/rename this file to notify.sh to enable the notification snippet.
 # generic sample, the "Hello World" of notification addons
@@ -14,12 +15,12 @@ trigger_notification()  {
 send_notification() {
     [ -s "$ScriptWorkDir"/urls.list ] && releasenotes || Updates=("$@")
     UpdToString=$( printf '%s\\n' "${Updates[@]}" )
-  
+
     # platform specific notification code would go here
     printf "\n%bGeneric notification addon:%b" "$c_green" "$c_reset"
     MessageTitle="$FromHost - updates available."
     printf -v MessageBody "🐋 Containers on $FromHost with updates available:\n$UpdToString"
-  
+
     trigger_notification
 }
 
@@ -27,10 +28,17 @@ send_notification() {
 ### to not send notifications when dockcheck itself has updates.
 dockcheck_notification() {
     printf "\nGeneric dockcheck notification\n"
-  
+
     MessageTitle="$FromHost - New version of dockcheck available."
     # Setting the MessageBody variable here.
     printf -v MessageBody "Installed version: $1 \nLatest version: $2 \n\nChangenotes: $3"
-  
+
+    RawNotifyUrl="https://raw.githubusercontent.com/mag37/dockcheck/main/notify_templates/notify_generic.sh"
+    LatestNotifyRelease="$(curl -s -r 0-150 $RawNotifyUrl | sed -n "/NOTIFY_GENERIC_VERSION/s/NOTIFY_GENERIC_VERSION=//p" | tr -d '"')"
+    if [[ "$NOTIFY_GENERIC_VERSION" != "$LatestNotifyRelease" ]] ; then
+        printf -v NotifyUpdate "\n\nnotify_generic.sh update avialable:\n $NOTIFY_GENERIC_VERSION -> $LatestNotifyRelease\n"
+        MessageBody="${MessageBody}${NotifyUpdate}"
+    fi
+
     trigger_notification
 }